Concrete-mixer.



H. Q. MAURINO.

CONCRETE MIXER.

APPLICATION FILED DEC. 4, 1912.

Patented Feb. 10, 1914.

2 SHEETS-SHEET 1.

.72: INVEN'II'OR) WITNESSES N ATTO R N EY H. Q. MAURINO. CONCRETE MIXER.

APPLIOATION FILED DEC. 4, 1912.

1,086,777, Patented Feb. 10, 1914.

2 SHEETS-SHEET 2.

v i I WITNESSES g INVENTOR' ATTO RN EY COLUMBIA PLANOGRAPH c0, WAsHma rcN, D. c.

HENRY Q. MAURINO, or ALBUQUERQUE, NEW MEXICO.

CONCRETE-MIXER.

Specification of Letters Patent.

Patented Feb. 10, 1914.

Application filed December 4, 1912. Serial No. 734,937.

To all whom it may concern Be it known that I, HENRY Q. MAURINO, a citizen of the United States, residing at Albuquerque, in the county of Bernalillo and State of New Mexico, have invented a new and useful Concrete-Mixer, of which the following is a specification.

The invention relates to improvements in concrete mixers.

The object of the present invention is to improve the construction of concrete mixers, and to provide a simple and inexpensive machine of strong and durable construction, capable of continuous operation and of rapidly and thoroughly mixing con crete or other material, either in a dry or wet condition, and adapted tobe easily operated to dump the contents of the receptacle in which the materials are mixed and to return the receptacles to an upright position to receive another batch of material without stopping the machine.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion,

size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings :-Figure 1 is an elevation of a. concrete mixer, constructed in accordance with this invention. Fig. 2 is a central vertical sectional view of the same. Fig. 3 is a plan view, the platform being partly broken away and the mixing receptacle being shown in an inverted position. Fig. 4: is a transverse sectional view of the mixing receptacle. Fig. 5 is a detail view of the means "for detachably holding the bar, which is connected with the mixing receptacle.

Like numerals of reference designate corresponding parts in all the figures of the drawings. 3

, In the accompanying drawings in which is illustrated the preferred embodiment of the invention, the frame of the machine, which may be of any preferred construction, comprises corner posts or uprights 1 suitably connected and braced and supporting a top platform 2 from which depends a central hopper 3 of conical or any other preferred form, adapted to deliver material to a mixing receptacle 4. The hopper 3 may be constructed of any suitable material, and the frame also supports a lower inclined chute 5, located beneath the mixing receptacle and adapted to receive the contents thereof when the receptacle is emptied, as hereinafter fully explained.

The mixing receptacle 4 preferably consists of a cylindrical drum, provided at the top with a rectangular flaring or hoppershaped mouth or opening 6 and mounted on a rotary shaft composed of horizontally alined terminal portions 7, oppositely extending parallel intermediate portions or arms 8, arranged at an obtuse angle to their respective terminal portions and disposed in parallelism and connected by a central portion 9, disposed at an angle to the axis of rotation of the shaft and carrying the mixing receptacle. The central portion 9 is arranged at right angles to the intermediate portions or arms 8, and when the intermediate portions or arms and the central portion 9 are arranged in a vertical plane, as indicated in Fig. 2 of the drawings, the central portion 9 is set at an inclination and extends above and below the horizontal plane of the terminal portions of the shaft, and one of the intermediate portions or arms inclines upwardly and inwardly and the other inclines downwardly and inwardly. When the shaft is rotated the central portion 9 forms a continuously shifting axis for the mixing receptacle, which is held against rotary movement by a bar 10, butwhich is continuously shifted from the full line position illustrated in Fig. 2 of the drawings to the dotted line posit-ion in the said figure, whereby the contents of the mixing receptacle are thrown. back and forth in a clirection longitudinally of the shaft from one end of the mixing receptacle to the other.

The central portion of the shaft has fixed to it a rotary cylinder 11, equipped with radial stirring or mixing arms 12 consisting of spikes or teeth suitably secured at their inner ends to the cylinder and provided at their outer ends with tapered blades 13, which are set at an angle to the direction of movement of the stirring or mixing arms 12. The stirring or mixing I thrown back and forth within the same at an angle to the rotary paths of the stirring or mixing arms. By this combined action of the rotary stirring device and the shifting mixing receptacle, the contents of the latter are rapidly and thoroughly mixed.

The horizontal terminal portions of the shaft are journaled in suitable bearings of the frame of the machine, and the mixing receptacle is provided at its ends with hearing opening let and is equipped thereat with antifriction balls 15, but any other form of bearing may, of course, be employed. One end of the shaft is equipped with a crank handle 16, and the other end has mounted on it a pulley 17 for enabling the shaft to be operated by a suitable power. The concrete mixer may be constructed in various sizes either for operation by hand or by power.

The bar 10 is provided at its end with an eye 18 linked into a centrally arranged eye 19 of the mixing receptacle and preferably formed integral with a shank or piece 20, which is secured to the inner end of the bar 10, but the latter may be constructed of any suitable material. The eye 19 is preferably formed by an eye bolt and projects from the center of the bottom portion of the mixing receptacle. The bar 10, which has its outer end shaped into a handle, is detachably secured to a vertical bar 21, arranged in spaced relation with the supporting frame and connected at its upper end with the same by braces 22 and provided at an intermediate point with a substantially L-shaped arm 23 having an upwardly extending terminal portion for engaging a perforation 2 1 in the bar 10, whereby the bar 10 is held against longitudinal movement, but is permitted to oscillate to accommodate itself to the movements of the mixing receptacle. hen it is desired to dump a batch of concrete, the bar 10 is disengaged from the arm of the bar 21, and the mixing receptacle is permitted to rotate one half of a revolution with the shaft from the position shown in full lines in F ig. 2 of the drawings to the inverted position illustrated in Fig. 3. The stirring or mixing arms will then discharge the contents through the mouth of the mixing receptacle and the material will fall into the chute 5. The empty mixing receptacle may be easily and quickly returned to its normal upright position beneath the hopper 3 by pulling outwardly on the operating bar 10, which is then reengaged with the supporting pivot of the bar 21. By this operation, the mixing receptacle is inverted and emptied through the rotary movement of the shaft and without stopping the same.

What is claimed is 1. A machine of the class described including a mixing receptacle, a rotary shaft having a portion carrying the mixing receptacle and arranged at an angle to the axis of rotation of the shaft and extending to opposite sides of such axis of rotation,

whereby the mixing receptacle is tilted alternately in Opposite directions through the rotary movement of the shaft, and means for holding the receptacle against rotary movement without interfering with the said alternate tilting movements.

2. A machine of the class described including a mixing receptacle, a rotary shaft having a portion carrying the mixing receptacle and arranged at an angle to the axis of rotation of the shaft and extending to opposite sides of such axis of rotation, whereby the mixing receptacle is tilted alternately in opposite directions through the rotary movement of the shaft, and a bar connected with the mixing receptacle for holding the same against rotary movement, said bar being mounted for lateral oscillation to accommodate itself to the alternate tilting movements of the said receptacle.

3. A machine of the class described in cluding a mixing receptacle, a rotary shaft having a portion carrying the mixing receptacle and arranged at an angle to the axis of rotation of the shaft and extending to opposite sides thereof, whereby the mixing receptacle is tilted alternately in opposite directions through the rotary movement of the shaft, an agitator fixed to the shaft and operating within the mixing receptacle, and means for holding the receptacle against rotary movement.

1. A machine of the class described including a horizontal shaft having a portion arranged at an angle to the axis of rotation of the shaft, a mixing receptacle loosely mounted on the angularly disposed portion of the shaft and tilted alternately in opposite directions through the rotary movement of the shaft, means fixed to the shaft and. rotating within the receptacle for mixing or agitating the contents thereof, a rod loosely connected with the mixing receptacle at the bottom thereof and movable laterally to accommodate itself to the alternate tilting movements of the receptacle, and means for detachably securing the rod for holding the.

mixing receptacle against rotary movement durmg the mixing operation.

5. A machine of the class described including a rotary shaft comprising horizontally alined terminal portions, angularly arranged intermediate portions extending from the horizontal portions in opposite directions, and a central portion set diago nally and arranged at right angles to and connecting the inner ends of the intermediate angularly disposed portions of the said shaft, a mixing receptacle mounted on and carried by the central diagonally disposed portion of the shaft and tilted alternately in opposite directions through the rotary movement of the said shaft, and means for holding the mixing receptacle against rotary movement without interfering with its 211- ternate tilting movements.

6. A machine of the class described including a mixing receptacle, a horizontal shaft having a portion carrying the mixing receptacle and arranged at an angle to the axis of rotation of the shaft and extending to opposite sides thereof, whereby the mixing receptacle is tilted alternately in opposite directions through the rotary movement of the said shaft, a cylinder fixed to the an gularly disposed portion of the shaft and provided with radial arms operating within the mixing receptacle, and means for holding the mixing receptacle against rotary movement without interfering with its alternate tilting movements.

7. A machine of the class described including a mixing receptacle, a horizontal shaft having a portion carrying the mixing receptacle and arranged at an angle to the axis of rotation of the shaft and extending to opposite sides thereof, whereby the mixing receptacle is tilted alternately in opposite directions through the rotary movement of the shaft, radially arranged mixing arms rigid with the angularly disposed portion of the shaft and operating within the receptacle, said arms being provided at their terminals with blades set at an angle, and means connected with the mixing receptacle for holding the same against rotary movement without interfering with its alternate tilting movements.

8. A machine of the class described including a frame, a horizontal rotary shaft mounted in the frame and having a portion arranged at an angle to the axis of rotation of the shaft, a mixing receptacle provided at the top with an opening and mounted on and carried by the angularly disposed portion of the shaft and tiltable alternately in opposite directions by the rotary movement of the latter, mixing arms fixed to the shaft and operating within the receptacle, and vibratory means for holding the receptacle against rotary movement during the mixing operation and detachable for permitting a partial rotation of the receptacle to dump the same.

9. A machine of the class described in cluding a horizontal shaft comprising horizontally alined terminal portions, angularly arranged intermediate portions extending from the horizontal portions in opposite directions, and a central portion connecting the inner ends of the angularly disposed in termediate portions and arranged at an angle to the axis of rotation of the shaft, a mixing receptacle mounted on and carried by the central portion of the shaft and tilted alternately in opposite directions through the rotary movement of the said shaft, and oscillatory means connected with the receptacle for holding the same against rotary movement without interfering with the al ternate tilting movements of the mixing receptacle.

10. A machine of the class described including a mixing receptacle, a rotary Shaft having a portion carrying the mixing re ceptacle and arranged at an angle to the axis of rotation of the shaft and extending in opposite sides of such axis of rotation and alternately tilting the mixing receptacle in opposite directions when the shaft is rotated.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

HENRY Q. MAURINO.

Witnesses:

GIOVANNI GIAooMELLI, Pm'rno GIONI.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, I). C. 

